C11111211113313112113313331333133313331333132322121111331323133313231311331   >>    C1111121111331311211331333133313331333133313232212111133132313331323131133   <<    C11111211113313112113313331333133313331333132322121111331323133313231311333   >>      C11111211113313112113313331333133313331333132322121111331323133313231311332   >>